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2139142970880 = 29345291272801
BaseRepresentation
bin11111001000001110110…
…110110101111000000000
321120111111112220010210000
4133020032312311320000
5240021431100032010
64314413025440000
7310355646146136
oct37101666657000
97514445803700
102139142970880
117552294922a3
122a66b67a0000
131269496c6836
147576c349756
153a99d85e7c0
hex1f20edb5e00

2139142970880 has 800 divisors, whose sum is σ = 7991192816640. Its totient is φ = 546236006400.

The previous prime is 2139142970873. The next prime is 2139142970941. The reversal of 2139142970880 is 880792419312.

2139142970880 is a `hidden beast` number, since 2 + 139 + 1 + 429 + 7 + 0 + 8 + 80 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 763705480 + ... + 763708280.

Almost surely, 22139142970880 is an apocalyptic number.

2139142970880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2139142970880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3995596408320).

2139142970880 is an abundant number, since it is smaller than the sum of its proper divisors (5852049845760).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2139142970880 is a wasteful number, since it uses less digits than its factorization.

2139142970880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2992 (or 2967 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 54.

The spelling of 2139142970880 in words is "two trillion, one hundred thirty-nine billion, one hundred forty-two million, nine hundred seventy thousand, eight hundred eighty".